1st stage

XS2 comes with the traditional Cressi AC2 piston model. This is a non-balanced first stage with such high performance that it can be compared to lots of excellent balanced models. The small number of components, the low weight and the excellent materials make it the strongest Cressi first stages, and the most steadfast to maltreatment, a real “working horse” amongst regulators. An ingenious bush system allows easy and rapid external regulation of the intermediate pressure.

 

2nd stage 

The XS2 features a downstream valve, light weight, high performance second stage. With the Cressi-sub patented Internal Balance Injection System, high performance is insured at all sport diving depths.